Listen: Chief Keef f/ Lil Durk "Gotta Sack"

Chicago is in the building today as Lil Durk joins the boss Chief Keef for his latest single "Gotta Sack." As expected they turn to Young Chop for the production, as he delivers a hard pounding beat for these two young MCs to go in on. Check out the track below, and be on the lookout for Keef's upcoming debut album Finally Rich in stores on December 18.